So much more than just ventilation.
Attic fan does it help.
Soffits gable vents without fans and rafter vents are passive ventilation systems to keep your roof and attic healthy.
That is i said that when you run a power attic ventilator in a typical house yes it will cool the attic down.
Attic fans perform best when your attic is properly sealed and insulated to block the entry of heat and moist air.
Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside.
The good thing is the devices operate using a thermostat therefore can automatically turn on and off with the desired temperatures.
Mechanical fans this is where an attic fan can help.
How does an attic fan work.
A powered attic ventilator has a different purpose.
Unlike a ventilation fan a whole house fan an attic mounted fan that exhausts air from a home at night is designed to cool a house that is to lower the indoor temperature.
Your home s roof and attic was most likely designed with just the right amount of fresh air it needs.
However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the attic.
When there is much humid in the air the attic fan can help eliminate the moist air.
An attic fan helps get out warm air in the attic that can create a hot uncomfortable living place.
This provides much needed ventilation and is a powerful addition to your hvac system.
Attic ventilation fans help cool air your attic by pushing out the stifling hot air from inside the attic and bringing in cool air from outside.
A significant amount of that cooling is likely to come from conditioned air being sucked up from the house below.
A mechanical fan working in an attic space equipped with adequate ventilation openings can move hot air out and increase the flow of air through the attic.
It helps to reduce the room temperature very significantly.
The humid air might cause condensation which might promote molds growth in the attic which is a health hazard.
One reason power attic ventilators don t help in my original article i focused on makeup air.
Some may also argue that an attic fan helps in the ventilation of your roof and or attic.
The good news is the above problems can be solved if you install an attic fan in your house.
It is designed to lower the temperature of an attic by exhausting air from the attic and replacing attic air with outdoor air.
Did you know that during the hot summer months attic temperatures can exceed 160 degrees.
This prevents hot air from seeping into your home and driving up the temperature in the living space which reduces the load on your air conditioner.
This will ensure that the attic is protected.
